Snowmobiler Specific

The Bridgeport Winter Recreation Area is Open to Over-the-Snow Vehicles (including Snowmobiles) for the 2018 winter season on December 15, 2018. We have enough snow depth required for recreating with snowmobiles. The corridor on Hwy 108 is covered with sufficient snow to depart from below People's Gate. See you there!

Upper Horse Creek

Location Name:

Upper Horse Creek

Region:

Other Area

Date and time of avalanche (best estimate if unknown):

Thu, 03/07/2019 - 08:00

Location Map:

Javascript is required to view this map.

Red Flags:

Recent avalanche activity

Recent loading by new snow, wind, or rain

Rapid warming

Observation made by: Public

Avalanche Observations

Avalanche Type:

Dry

Slab

Trigger type:

Natural

Crown Height:

2 ft

Aspect:

North

Weak Layer:

Unknown

Avalanche Width:

800ft.

Terrain:

Above Treeline

Elevation:

11 000ft.

Bed Surface:

Old Snow

Avalanche Length:

300ft.

Number of people caught:

0

Did the avalanche hit a building, vehicle, or structure?:

No

More detailed information about the avalanche:

Spotted this natural wind slab this morning between the Matterhorn and the Doodad in Upper Horse Creek. Approx. R3 D3. Guessing it failed at the old snow surface or via graupel pooling.

This was the only significant avalanche we spotted in the Twin Lakes vicinity this morning. Remnants of loose wet activity were apparent beneath steep terrain below 9K.

Snowpit or crown profile photo or graph:

Weather Observations

Blowing Snow:

Yes

Cloud Cover:

Clear

Air temperature:

Below Freezing

Wind Speed:

Moderate

Precipitation:

None

Air temperature trend:

Warming

Wind Direction:

West

Accumulation rate:

None

More detailed information about the weather:

Gusty M-S winds at the lake shore around 5am persisted until around 8am at 10K. They tappered quickly post 8am and were C-L at all elevations sampled shortly thereafter.

People

Resources

With Support from ESIA

ESIA is a 501(c)3 organization. ESIA partners with the Inyo National Forest, Humboldt-Toiyable National Forest and Tahoe National Forest to help educate and inspire people about our public lands through high quality interpretive products and programs.